1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// Copyright 2014 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Output buffer for WOFF2 decompression.
#include "./woff2_out.h"
namespace woff2 {
WOFF2StringOut::WOFF2StringOut(string* buf)
: buf_(buf),
max_size_(kDefaultMaxSize),
offset_(0) {}
bool WOFF2StringOut::Write(const void *buf, size_t n) {
return Write(buf, offset_, n);
}
bool WOFF2StringOut::Write(const void *buf, size_t offset, size_t n) {
if (offset > max_size_ || n > max_size_ - offset) {
return false;
}
if (offset == buf_->size()) {
buf_->append(static_cast<const char*>(buf), n);
} else {
if (offset + n > buf_->size()) {
buf_->append(offset + n - buf_->size(), 0);
}
buf_->replace(offset, n, static_cast<const char*>(buf), n);
}
offset_ = std::max(offset_, offset + n);
return true;
}
void WOFF2StringOut::SetMaxSize(size_t max_size) {
max_size_ = max_size;
if (offset_ > max_size_) {
offset_ = max_size_;
}
}
WOFF2MemoryOut::WOFF2MemoryOut(uint8_t* buf, size_t buf_size)
: buf_(buf),
buf_size_(buf_size),
offset_(0) {}
bool WOFF2MemoryOut::Write(const void *buf, size_t n) {
return Write(buf, offset_, n);
}
bool WOFF2MemoryOut::Write(const void *buf, size_t offset, size_t n) {
if (offset > buf_size_ || n > buf_size_ - offset) {
return false;
}
std::memcpy(buf_ + offset, buf, n);
offset_ = std::max(offset_, offset + n);
return true;
}
} // namespace woff2
|
